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Norma-Jean [14]
3 years ago
11

Solve the equation. Then check your solution. - (3a + 4) = 7 Helppp

Mathematics
2 answers:
Sati [7]3 years ago
8 0

Answer:

a= -3\frac{2}{3} or ≈ -3.66

Step-by-step explanation:

-(3a+4)=7

-3a-4=7

<em>Add 4 to both sides</em>

-3a=11

<em>Multiply both sides by -1</em>

3a= -11

Divide both sides by 3

a= -3\frac{2}{3}

vlada-n [284]3 years ago
7 0

Answer:

1

Step-by-step explanation:

-3a+4 =7

-4. _4

-3a=3

divide by -3 on both sides

a=-1

3+4=7

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TEA [102]

Answer:

{-3, -4}

Step-by-step explanation:

hope it will help you☺

6 0
3 years ago
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cricket20 [7]

Answer:

$137,339.88

Step-by-step explanation:

Here is the equation for compound interest: A=P(1+(r/n))^nt

where A=amount of money, P=principal, r= rate in decimal, n=number of times compounded per t, and t=time

In this case:

A=$250,000

P= ?

r= 0.04

n= 12 month/yr

t= 15 yrs

You can manipulate the equation to solve for P:

P=A/[(1+(r/n))^nt]

Plug in variables then solve:

P= \frac{250,000}{(1+\frac{0.04}{12})^{12*15} }

P=137339.8761 = $137,339.88

6 0
3 years ago
Please help solve much appreciated
DIA [1.3K]

Step-by-step explanation:

For the Cuboid, the formula will be:

Width x Height x Length

For the cylinder the volume formula will be:

\pi \:  \times  \:  {radius}^{2}  \times  \: length

7 0
3 years ago
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Svetradugi [14.3K]
Its the middle two. Hope I helped
5 0
3 years ago
Solve the system of equations -2x+y=5 x-3y=-30
EastWind [94]
-2x+y=5
x-3y=-30 so you can multiply the bottom equation by 2 you'll get 2x-6y=-60

-2x+y=5
2x-6y=-60 And subtract the equations. You'll get -5y=-55 y=11. Plug it in to one of the original equations. -2x+(11)=5 
-2x=-6 so x=3 

y=11 and x=3 
5 0
3 years ago
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